将两个 JToken 合二为一

Question

How can I merge these two JTokens into one single JToken. This sounds like it should be simple, but can't get my way around it.

{
  "data":[
  {
      "ID":"53a1862000404a304942546b35519ba3",
      "name":"Private Approval Process: Draft Document CPL",
      "objCode":"ARVPTH"
  }]
}

{
"data":[
  {
      "ID":"53a1838200401324eb1ec66562e9d77d",
      "name":"Private Approval Process: Draft Document CPL",
      "objCode":"ARVPTH"
  }]
}

Thanks for the help!

This is what I have tried so far:

I started by assigning the first object to a variable Jtoken pageOne then, I tried concatenating it into a second variable JToken allPages . I have a loop that brings back multiple pages each with three fields. The final goal is to grab each page and create a big J Token with all of the pages in it.

something like this:

for (int page = 0; page <= recCount; page += 2000)
{
 //Get data
 pageOne = getJsonData();
 allPages.Concat(pageOne);
}
return allPages;

Answer 1

You can use JContainer.Merge(Object, JsonMergeSettings) to merge one JObject onto another. Note that JsonMergeSettings.MergeArrayHandling gives control over how arrays are merged. From the MergeArrayHandling Enumeration documentation , the possible merge options are:

 Concat 0 Concatenate arrays. Union 1 Union arrays, skipping items that already exist. Replace 2 Replace all array items. Merge 3 Merge array items together, matched by index.

Thus merging using MergeArrayHandling.Concat as follows, where allPages and pageOne are both of type JContainer (or a subclass, such as JObject ):

JContainer allPages = null;
var settings = new JsonMergeSettings { MergeArrayHandling = MergeArrayHandling.Concat };
for (int page = 0; page <= recCount; page += 2000)
{
    //Get data
    var pageOne = (JContainer)getJsonData(page);
    if (allPages == null)
        allPages = pageOne;
    else
        allPages.Merge(pageOne, settings);
}
return allPages;

gives:

{
  "data": [
    {
      "ID": "53a1862000404a304942546b35519ba3",
      "name": "Private Approval Process: Draft Document CPL",
      "objCode": "ARVPTH"
    },
    {
      "ID": "53a1838200401324eb1ec66562e9d77d",
      "name": "Private Approval Process: Draft Document CPL",
      "objCode": "ARVPTH"
    }
  ]
}

While merging using Replace gives:

{
  "data": [
    {
      "ID": "53a1838200401324eb1ec66562e9d77d",
      "name": "Private Approval Process: Draft Document CPL",
      "objCode": "ARVPTH"
    }
  ]
}

If your variables are of type JToken you will need to cast them to JContainer . (JSON primitives that are not containers cannot be merged.)

JsonMergeSettings.MergeNullValueHandling gives control over whether to merge or ignore null values, as required.

Answer 2

You could merge it like that (or if you had it had it in an array or list you could make a linq group by query for example over the ID property, that would be likewise effective).

  var data1 =  JObject.Parse(@"{
           'data':[
          {
             'ID':'53a1862000404a304942546b35519ba3',
              'name':'Private Approval Process: Draft Document CPL',
              'objCode':'ARVPTH'
          }]
        }");

        var data2 = JObject.Parse(@"{
           'data':[
          {
             'ID':'53a1862000404a304942546b35519ba3',
              'name':'Private Approval Process: Draft Document CPL',
              'objCode':'ARVPTH'
          }]
        }");

        data1.Merge(data2, new JsonMergeSettings
        {
           MergeArrayHandling = MergeArrayHandling.Union
        });

        string json = data1.ToString();